阅读说明：本技术 音频编码器、音频解码器及相关方法 (Audio encoder, audio decoder and related methods ) 是由 萨沙·迪施 弗雷德里克·纳格尔 拉尔夫·盖格尔 巴拉吉·纳根德兰·托斯卡纳 康斯坦丁·施密特 于 2014-07-15 设计创作，主要内容包括：提供了音频编码器、音频解码器及相关方法。一种用于生成解码的双声道信号的设备包括：音频处理器(802),用于对编码的双声道信号进行解码以获得第一组第一频谱部分；参数化解码器(804),用于提供第二组第二频谱部分的参数化数据以及提供用于标识第二频谱部分的第一双声道表示或不同的第二双声道表示的双声道标识；以及频率再生器(806),用于取决于第一组第一频谱部分中的第一频谱部分、第二部分的参数化数据以及第二部分的双声道标识来再生第二频谱部分。(Audio encoders, audio decoders, and related methods are provided. An apparatus for generating a decoded binaural signal comprising: an audio processor (802) for decoding the encoded binaural signal to obtain a first set of first spectral portions; a parametric decoder (804) for providing parametric data for a second set of second spectral portions and for providing a binaural indication identifying a first binaural representation or a different second binaural representation of the second spectral portions; and a frequency regenerator (806) for regenerating the second spectral portion in dependence on the first spectral portion of the first set of first spectral portions, the parametric data for the second portion and the binaural identification for the second portion.)

1. An apparatus for generating a decoded binaural signal, comprising:

an audio processor (802) for decoding the encoded binaural signal to obtain a first set of first spectral portions;

a parametric decoder (804) for providing: parametric data for a second set of second spectral portions and a binaural identification for identifying a first binaural representation of the second spectral portions or a different second binaural representation; and

a frequency regenerator (806) for regenerating a second spectral portion in dependence on the first spectral portion of the first set of first spectral portions, the parametric data for the second spectral portion and the binaural identification of the second spectral portion.

2. Audio encoder for encoding a binaural audio signal, comprising:

a time-to-spectrum converter (860) for converting the two-channel audio signal into a spectral representation;

a binaural analyzer (864) for analyzing frequency bands of the binaural audio signal within the reconstruction range to determine a binaural indication identifying a reconstruction frequency band of the first binaural representation or of the second binaural representation;

a spectrum analyzer (860) for providing an indication of a first set of first spectral portions to be encoded at a first spectral resolution and a second set of second spectral portions to be encoded at a second spectral resolution, the second spectral resolution being smaller than the first spectral resolution;

a core encoder (870) for encoding a first set of first spectral portions to provide a first encoded representation; and

a parameter calculator (868) for calculating parametric data for the second set of second spectral portions;

wherein the encoded binaural audio signal comprises the first encoded representation, the encoded parametric representation of the second set of second spectral portions and the binaural identification.

3. A method for generating a decoded binaural signal, comprising:

decoding (802) the encoded binaural signal to obtain a first set of first spectral portions;

providing (804) parametric data for a second set of second spectral portions and a binaural identification for identifying a first binaural representation or a different second binaural representation for the second spectral portions; and

the second spectral portion is reproduced (806) in dependence on the first spectral portion of the first set of first spectral portions, the parametric data for the second spectral portion and the binaural identification of the second spectral portion.

4. A method for encoding a binaural audio signal, comprising:

converting (860) the binaural audio signal into a spectral representation;

analyzing (864) frequency bands of the binaural audio signal within the reconstruction range to determine a binaural identification for identifying a reconstruction frequency band of the first binaural representation or of the second binaural representation;

providing (860) an indication of a first set of first spectral portions to be encoded at a first spectral resolution and a second set of second spectral portions to be encoded at a second spectral resolution, the second spectral resolution being less than the first spectral resolution;

encoding (870) the first set of first spectral portions to provide a first encoded representation; and

calculating (868) parametric data for a second set of second spectral portions;

wherein the encoded binaural audio signal comprises the first encoded representation, the encoded parametric representation of the second set of second spectral portions and the binaural identification.

5. A computer program which, when run on a computer or processor, performs one of the methods according to claim 3 or 4.